Steep– do not brew–these dried leaves or twigs in warm water (about 180 degrees). The steeped “mate” is reputed to offer many health benefits. Some users report these benefits; improved mood, increased metal focus, a good detoxifier. Caffeine content varies between 0.3% and 1.7% of dry weight (compare this to 2.5-4.5% for tea leaves, and 1.5% for coffee.